A business in context

AMT research notebook

Read the disclosures. Follow the relationships. Keep the dates in view.

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-10-23 · 8022 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 4 · Ownership change

    Report date 2023-04-28 · 0001053507-26-000151

  2. 4 · Ownership change

    Report date 2026-10-01 · 0001053507-26-000149

  3. 8-K · Current report

    Report date 2026-09-17 · 0001053507-26-000145 · Items 5.02,8.01,9.01

  4. 8-K · Current report

    Report date 2026-09-14 · 0001193125-26-390605 · Items 1.01,2.03,9.01

  5. 8-K · Current report

    Report date 2026-09-09 · 0001053507-26-000141 · Items 8.01,9.01

  6. 4 · Ownership change

    Report date 2026-08-21 · 0001053507-26-000139

  7. 4 · Ownership change

    Report date 2026-07-29 · 0001053507-26-000137

  8. 4 · Ownership change

    Report date 2026-07-28 · 0001053507-26-000135

  9. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001053507-26-000133

  10. 8-K · Current report

    Report date 2026-07-28 · 0001053507-26-000131 · Items 2.02,9.01

  11. 8-K · Current report

    Report date 2026-06-02 · 0001053507-26-000127 · Items 8.01

  12. 4 · Ownership change

    Report date 2026-06-01 · 0001053507-26-000125

  13. 8-K · Current report

    Report date 2026-06-02 · 0001053507-26-000123 · Items 8.01

  14. 4 · Ownership change

    Report date 2026-05-28 · 0001053507-26-000121

  15. 8-K · Current report

    Report date 2026-05-27 · 0001193125-26-240535 · Items 1.01,2.03,9.01

  16. 8-K · Current report

    Report date 2026-05-20 · 0001053507-26-000116 · Items 5.02,5.07,8.01,9.01

  17. 4 · Ownership change

    Report date 2026-05-20 · 0001053507-26-000113

  18. 8-K · Current report

    Report date 2026-05-19 · 0001053507-26-000111 · Items 8.01,9.01

  19. 8-K · Current report

    Report date 2026-05-07 · 0001053507-26-000108 · Items 1.01,2.03

  20. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001053507-26-000099

  21. 8-K · Current report

    Report date 2026-04-28 · 0001053507-26-000094 · Items 2.02,9.01

  22. DEF 14A · Proxy statement

    Report date 2026-05-20 · 0001053507-26-000088

  23. 8-K · Current report

    Report date 2026-03-06 · 0001053507-26-000048 · Items 5.02

  24. 8-K · Current report

    Report date 2026-03-05 · 0001053507-26-000041 · Items 8.01,9.01

  25. 8-K · Current report

    Report date 2026-02-25 · 0001053507-26-000038 · Items 5.02

  26. 10-K · Annual report

    Report date 2025-12-31 · 0001053507-26-000035

  27. 8-K · Current report

    Report date 2026-02-24 · 0001053507-26-000032 · Items 2.02,9.01

  28. 8-K · Current report

    Report date 2026-01-26 · 0001053507-26-000028 · Items 5.02

  29. 8-K · Current report

    Report date 2026-01-28 · 0001053507-26-000026 · Items 8.01

  30. 8-K · Current report

    Report date 2025-12-05 · 0001193125-25-309718 · Items 1.01,2.03,9.01

  31. 8-K · Current report

    Report date 2025-12-04 · 0001053507-25-000157 · Items 8.01,9.01

  32. 8-K · Current report

    Report date 2025-12-02 · 0001053507-25-000155 · Items 8.01,9.01

  33. 8-K · Current report

    Report date 2025-11-05 · 0001053507-25-000153 · Items 5.02

  34. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001053507-25-000149

  35. 8-K · Current report

    Report date 2025-10-28 · 0001053507-25-000147 · Items 2.02,9.01

  36. 8-K · Current report

    Report date 2025-09-23 · 0001053507-25-000143 · Items 7.01

  37. 8-K · Current report

    Report date 2025-09-16 · 0001053507-25-000139 · Items 5.02,8.01,9.01

  38. 8-K · Current report

    Report date 2025-09-16 · 0001193125-25-205004 · Items 1.01,2.03,9.01

  39. 8-K · Current report

    Report date 2025-09-11 · 0001053507-25-000132 · Items 8.01,9.01

  40. 8-K · Current report

    Report date 2025-09-03 · 0001053507-25-000129 · Items 7.01

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-10-23 · 2026 Q3: filings in this completed quarter; not a live transaction feed

Purchases and sales include open-market or private transactions. Grants, exercises and tax withholding are shown separately. Amendments and joint reports can overlap; rows are not a net-buying score. Prices retain the filing's units; consult its footnotes.

Transaction rows by code · counts, not monetary totals
Purchase: 1 transaction rows1PSale: 3 transaction rows3SGrant / award: 0 transaction rows0AExercise / conversion: 0 transaction rows0MTax / exercise payment: 0 transaction rows0FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

4 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-08-21
2026-08-25
Kalathur RajeshP · Purchase
Acquired
Common Stock2829.0177.0
2026-07-29
2026-07-31
Meyer Robert JosephS · Sale
Disposed
Common Stock5000.0178.89
2026-07-29
2026-07-30
Dowling Ruth T
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock1106.0174.96
2026-07-28
2026-07-30
Dowling Ruth T
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock685.0169.54

Identity & relationships

Wikidata structured data · retrieved 2026-10-23 · 1658 unambiguous CIK-linked entities; coverage is incomplete

These are sourced identity and relationship claims, with incomplete coverage. Headquarters locations do not describe sales, assets or operating exposure.

SEC issuer · 0001053507AMERICAN TOWER CORP /MA/

No parent relationship is available in this import; this is not proof of independence.

Legal Entity Identifier
5493006ORUSIL88JOE18
GLEIF legal name
AMERICAN TOWER CORPORATION
Entity / LEI registration status
ACTIVE / ISSUED
Reference data updated
2026-07-30T20:03:52Z

direct-parent: no parent LEI supplied

ultimate-parent: no parent LEI supplied

GLEIF legal entity reference data · retrieved 2026-10-23 · 1197 checked identities; 0 unavailable records

Search names and former names

View Wikidata identity and references ↗

  • American Tower Corporation · alias · wikidata
  • AMERICAN TOWER SYSTEMS CORP · former SEC name · 1998-02-13 to 1998-05-08
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Revenue in constant purchasing power

USD revenue expressed in 2026-09 consumer-price dollars. Each annual period uses a CPI-U average weighted by the days in its actual reporting interval. This is a purchasing-power comparison, not a company-specific price or volume measure.

Year endedReported USD revenueCPI-adjusted USD revenue
2024-12-31$10.13B$10.88B
2023-12-31$10.01B$11.07B
2022-12-31$9.65B$11.10B
2021-12-31$9.36B$11.63B
2020-12-31$8.04B$10.47B
2019-12-31$7.58B$9.99B
2018-12-31$7.44B$9.98B
2017-12-31$6.66B$9.16B

Bureau of Labor Statistics · retrieved 2026-10-23 · 9 selected series; gaps remain missing

Explore the CPI history ↗